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a door closer

A technology of door closers and components, which is applied in door/window accessories, switches with braking devices, buildings, etc. It can solve problems such as unstable operation of door closers, and achieve simple structure, stable and smooth operation, and convenient use Effect

Active Publication Date: 2021-08-27
广州特伯能门控有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the pistons of cam structure door closers are composed of front-end piston and rear-end piston. When opening the door, in order to make the front-end piston follow the rotation of the transmission camshaft and move close to the transmission camshaft, it is generally in front of the front-end piston. Add a push spring to push the front piston to move with the transmission camshaft. When the door is automatically closed, the main drive spring releases the kinetic energy compressed when the door is opened, pushes the rear piston to return, and drives the transmission camshaft to rotate. When the transmission camshaft rotates, it pushes the front piston to return. , but the return stroke of the front-end piston will be resisted by the push spring in front of the front-end piston, so that the mutual resistance and interference force between the main drive spring and the front-end piston push spring will be formed, making the operation of the entire door closer unstable. the elements of

Method used

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Embodiment Construction

[0041] Orientation terms such as up, down, left, right, front, back, front, back, top, and bottom that are mentioned or may be mentioned in this specification are defined relative to their structures, and they are relative concepts. Therefore, it is possible to make corresponding changes according to its different positions and different usage states. Accordingly, these or other directional terms should not be construed as limiting terms.

[0042] The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of approaches consistent with aspects of the disclosure as recited in the appended claims.

[0043] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are inte...

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Abstract

The invention discloses a door closer, comprising: a casing; a transmission camshaft, the transmission camshaft is pivotally connected in the casing, and the axial direction of the transmission camshaft is perpendicular to the extending direction of the casing Link arm, one end of the link arm is connected with the transmission camshaft, and the link arm can drive the transmission camshaft to rotate; a slide rail assembly, the slide rail assembly can be installed on the door leaf, the The slide rail assembly is connected to the other end of the link arm; and a front piston assembly and a rear piston assembly are arranged in the housing and respectively located at the ends of the transmission camshaft On the front and rear sides, the front piston assembly is connected to the rear piston assembly; the transmission camshaft can push the rear piston assembly and move back together with the front piston assembly; the rear piston assembly and the front piston assembly can Automatically return and drive the transmission camshaft to rotate.

Description

technical field [0001] The invention relates to a door closer. Background technique [0002] Compared with the slide rail mounted door closer with the traditional rack and pinion structure, the slide rail mounted door closer with the cam transmission structure gives the user the feeling that the door is opened very easily and the door closed very powerfully, so compared with the traditional gear tooth Bar door closers, cam drive structure door closers have better performance. [0003] Due to the small resistance of the cam drive structure door closer, the door is particularly easy to open, and the elderly, children, and disabled people can open it, and can be adapted to the installation and use of doors in special occasions such as barrier-free passages. Therefore, the application range of the cam structure door closer is wider. . [0004] At present, most of the pistons of cam structure door closers are composed of front-end piston and rear-end piston. When opening the do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F3/10E05F3/02E05F3/22
CPCE05F3/02E05F3/10E05F3/22
Inventor 陈志红魏俊锦
Owner 广州特伯能门控有限公司